<?php
	function write($text) {
		print($text);
	}
	function writeBold($text) {
		print("<b>".$text."<b>");
	}
	//由于变量后面带了(),所以找相同名字的函数调用了
	$myFunciton = "write";
	echo $myFunciton;
	$myFunciton("您好<br><br>");
	
	$myFunciton = "writeBold";
	echo $myFunciton;
	$myFunciton("再见<br><br>");